Results 31 to 40 of about 212,822 (309)

Hydrometallurgical Methods for Extracting Non-ferrous Metals from Electronic Gadgets

Chemical Engineering Transactions, 2021
This article explores an environmentally friendly method of complex processing of printed circuit boards of cell phones in order to extract gold and other valuable components without cyanides. Thiourea was used as reagents for leaching gold and silver. A
Zhanserik Shoshay, Ruslan Viktorovich Sapinov, Marzhan Anuarbekovna Sadenova, Petar Sabev Varbanov   +3 more
doaj   +1 more source

Selective Recovery of Gold Using Two Sea Algae (Ulva lactuca and Ulva pertusa) with or Without Concentrated Sulfuric Acid Treatment

Separations
Four algal adsorbents were prepared from two types of green sea algae (Ulva lactuca and Ulva pertusa), either by treatment with concentrated sulfuric acid or without treatment.
Jhapindra Adhikari, Gehui Pang, Shintaro Morisada, Hidetaka Kawakita, Keisuke Ohto, Mikihide Demura, Kazuya Urata   +6 more
doaj   +1 more source

Gold Recovery Beyond Ores: Sources, Processes, Challenges, and Prospects

Metals
Gold (Au) is a strategically critical metal whose technological relevance and increasing demand contrast with the long-term decline in primary ore grades. This review discusses gold recovery from primary ores providing the metallurgical and technological
Jovana Djokić, Stefan Nikolić, Stevan Dimitrijević, Shuiping Zhong, Željko Kamberović   +4 more
doaj   +1 more source

Recovery of gold from computer circuit board scraps: the study of the effect of different reductants [PDF]

شیمی کاربردی روز, 2013
Computer circuit boards (CCBs) are valuable because of their precious metal contents. In this regard, the recovery of gold from CCBs has attracted great interest. In this work, we report the recovery of gold from CCBs with different reductants.
Naghi Saadatjoo, Hadi Heydari, Ahmad Abdullahi, Mahdi Behzad   +3 more
doaj   +1 more source

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye, Chimezie Okwuonu, Evelyn Idam, Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Zinnah Aloziem, Blossom Amamchukwu, Patience Elimia, Mkpoikanabasi Obot‐Obot, Henry Mbakwe, Praises Maduagwuna, Olatunji Akinrodoye, Chiamaka Anyanwu, Benjamin Anyanwu, Adedamola Akinsiku, Oluwatoyin A. Akinsiku, Muzamil O. Hassan, Fatiu A. Arogundade, Olalekan E. Ojo, Homayemem Weli, Jesupelumi Adenihun, Aderemi Adelaja, Ebun Bamgboye, Olalekan Olatise, Ade E. Faponle, Ayoola Odeyemi, Michael Muoka, Stephen Asaolu, Qudrat Busari, Blessing Dawudu, Michael Naiyeju, Rasheed A. Balogun   +33 more
wiley   +1 more source

Recovery of gold from thiosulfate solutions and pulps with anion-exchange resins [PDF]

, 2002
With growing environmental and occupational safety concerns over the use of cyanide in gold processing, more acceptable alternatives are receiving increased interest. The most promising of the possible alternatives is thiosulfate.
O'Malley, Glen Peter
core   +1 more source

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Rasheed A. Balogun   +4 more
wiley   +1 more source

Highly Efficient and Selective Extraction of Gold from Thiosulfate Leaching Solution Using Functionalized Dicationic Ionic Liquids

Molecules
Thiosulfate leaching has been regarded as a promising alternative to cyanidation, but it still faces the challenge of the recovery of low content of gold from high concentrations of thiosulfate solutions.
Qiang Zhou, Yunchang Fan, Sheli Zhang
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Study on Comprehensive Recovery of Gold, Silver and Copper Associated with Iron Ore in Qinghai

Kuangchan zonghe liyong, 2022
A small amount of gold and silver copper is associated with the iron ore of Qinghai, and the associated minerals reach the recovery standard; the test adopts the first magnetic rear floating and the first floating post-floating magnetic process flow; the
Yong Chen
doaj   +1 more source